Definition of rheology 。Rheology T UTC [Greek rheos -"to flow"]is the study of deformation and flow of matter ·Name was coined by Dr. Marcus Reiner instead of the more obscure “continuum mechanics” Motto of the Society of Rheology:“Panta Rhei”or “everything flows'” t after HeraclitusDefinition of Rheology • Rheology [Greek rheos - “to flow”] is the study of deformation and flow of matter • Name was coined by Dr. Marcus Reiner instead of the more obscure “continuum mechanics” • Motto of the Society of Rheology:“Panta Rhei” or “everything flows” - after Heraclitus